Separable pulley



(No Modl.)

VyW. CODDINGTON. SEPARABLB PULLEY.

N. 443,269. Patentad Dec. 23, 1890.

Winesse f."

UNITED STATES VANTYLE W'. CODDIN GTON,

PATENT GEEICE.

OF KANSAS CITY, MISSOURI.

SEPARABLE PU LLEY.

SPECIFICATION forming part of Letters Patent No. 443,269, dated v:December 23, 1890.

Application tiled May 14, 1890.

To all whom it may concern:

Be it known that I, VANTYLE lV. CODDING- TON, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain'new and useful Improvements in Separable Pulleys; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming a part of this specilication.

My invention has for its object, first, to prevent the accidental displacement of any of the clamping attachments upon the respective parts of a separable pulley when upon the driving-shaft or removed therefrom, and, second, to prevent the clamping-bolts from turning; and it consists in the novel construction and combination of parts, which will first be fully described, and specifically pointed out in the claims.

In the drawings, Figure l is a view in perspective of the separable pulley with portions broken away to show the clamping-bolts and bolt-retaining pockets and the line of separation in a transverse direction to the shaft. Fig. 2 is an interior view of one of the parts of the separable. pulley separated transversely to the shaft and showing the concealed grooves for the bolts and the pockets for the boltheads and nuts. Fig. 3 is a side view of the pulley, showing the key removed.

Similar letters of reference indicate corresponding parts in all the figures.

My invention is more particularly applicable to small-sizedpulleys for shafts, which require adjustable concealed clamping attachments, by means of which the pulley may be secured or removed quickly from the shaft. Heretofore such concealed attachments have not, however, prevented the working loose of one or the other part of the said clamping attachment and the consequent loss of utility of the pulley. This I obviate as follows:

A represents a Web-pulley, which is preferably turned in a lathe and made in the proper dimensions, with a periphery aX and a central opening a to receive the bushing of shaft. In a transverse direction to the axis of its shaft on line a said pulleyA is separated into two Serial No. 351,825. (No model.)

equal sections or parts d2 a3. Upon the inner end portion of one separate portion or section d2 of the pulley on bothsides of the shaft and in parallel lines transverse to said shaft-opening a are made the longitudinal grooves a4 d5, each one of which is of the comparative-width and depth of one-half of an ordinary bolt separated in the line of its diameter, and eachv groove extends in opposite directions to within a short distance of the periphery of said pulley. Intersecting with the groove a4 in one direction and near its terminus is made a transverse rectangular-.shaped depression or pocket a, which extends below the bottom of the said groove a4. In the other direction the groove d4 is extended through the periphery aX of the pulley, and a short distance from said periphery is made an intersecting cylindricalshaped depression or pocket a7. The groove a5 corresponds in length to the groove d4 and is extended through the periphery ax of the pulley in the direction opposite to that dcscribed by the said groove d4. Intersecting with the groove d5, nearly in li'ne with the pockets or depressions a, is made a depression a9, and nearly in line with the pocket a7 is made a similar pocket as. In the inner end portion of the other separable part a3 of the pulley are made registering grooves and depressions, which are a complement of the grooves or.'l d5 and depressions or pockets a6 aT a8 d in the part d2 and correspond exactlyin position and extent. In the grooves a4 a5 are ing-bolts B, and in the depressions ai a are placed the heads b of said bolts, which are, as seen, reversed. The other ends b2 of the bolts B are screw-threaded. In the head b of each bolt is made a transverse groove or socket b3. In the depressions or pockets dG as are placed the rectangular nuts b4, which receive the threaded end of the bolt B. The two parts a2 0.3 and nuts are then glued or otherwise fastened permanently together. The pulley is then separated in the line of the diameter of the axis of its shaft into two separable parts. Within the perforations formed by the grooves a* a5 and extending through theperiphery of the pulley ax in the direction of the head Z9 of the bolt is inserted a locking-,key C, which is cylindrical iu shape and wedge-shaped at the lower end c and fitted placed the shanks b of the respective clamp- IOO to thesocket- L in the bolt-head Ii. The other end portion c ot the key U is cut in an oblique direction and is perforated at e2, through which perforation a slight distance below the opening in the periphery ax oi' the pulley is inserted a screw ci", which penetrates the pulley in adirection tangential to its axis or shaft and prevents the holt l5 from turning.

In securing the pulley to the shaft the separable parts of the pulley are fitted with its particularbushing, or placed directly on the shaft'. in the usual manner. The screw-threaded ends of the transverse clamping-bolts are inserted in the respective bolt-grooves and car ried to the opening in the nuts and by means of any ordinary screw-d ri ver [itt ed to the opening or socket D". The bolts are turned suffi cicntly to enter the nuts and clamp or removably secure the separate parts of the pulley to the shaft.

The pulley, instead of being turned from one solid piece, may be made in layers, as shown by horizontal lines in I `ig. .3, and the pockets made in a sectional partei-layer, so as to hold the nuts and the perforations for the bolt-Shanks cut in the usual way, it' preferred.

In my pulley the nut cannot turn, as the size and shape of the pocket and nut are almost equal, and as the threaded end of the bolt passes through the n utthelength of the groove is sniiicicnt to perlnittheadjustnientof the nut thereon the distance required. In this man- '.l'he thickness of the web ot the pulley inay vary and he less than that of the periphery, sufficient depth only being required to altord the depth to the pocket and grooves.

Having fully described iny invention, whatI now claim as new, and desire to secure by Letters Patent, is-

1. A pulley having a solid web and separable in one direction upon a line transverse to the axis and in the other in the lineof the diameter of said axis and provided with clamping bolts and nuts` each one of said transverse parts ofsaid pulley having registering grooves upon its inner side in parallel lines transverse to and on both sides of said axis projected through to the periphery of said pulley, and retainingpockets intersecting with said grooves, one ot' which pockets at each side of the axis is adapted to retain the bolt-head and the other the nut, substantially as described.

2. A separable pulley united in the line of thc diameter of the shaft and each one of the .separate parts thereof having perforations in parallel lines transverse to said shaft projected through to the peripheryof said pulley, and pockets intersecting said perforations, clamping bolts and nuts in the respective perfor-ations, and locking-keys in said peripheral perforations engaging with the said bolts, substantially as and for the purpose described.

"Witnesses:

S. L. lIAssoN, W. M. (foYLE. 

